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MASHV TUB.

No. 248,084. mama oct. 11, 1881.

)lll/111111 WIIIIIIIIIIIIHHII;

WTNE-EE-E- Y BVV UNITED STATES;-

PATENT OFFICE.

OSOAR E. ROOMER, OE BROOKLYN, ASSIGNOR OE ONE-THIRD TO ANDERSON EOWLER, OE NEW YORK, N. Y.

MASH-TU B.

SPEUIFICATION formingpart of Letters Patent No. 248,084, dated October 11, 1881.

y Application led February 2.6, 1881. (No model.)

To all whom it may concern Be it known that I, OSCAR FINN BOOMER, of Brooklyn, in the county of Kings and State ot New York, have invented certain Improvements in Mash-Tubs, of which the followingis a specification.

The object of this invention is to provide for the more effective heating of the mash-tub used by brewers, &c., than is possible with the ordiro nary construction of such apparatus; and it consists in a novel com bination of parts, whereby the heat is carried into close and intimate contact and communication with the contents of the tub without interfering with the operation of the usual stirrers or beaters; also, in

certain novel combinations of parts whereby the rst-named feature of my said invention is effectively and cheaply carried into effect.

Figure l is a vertical sectional view of a `2o mash-tub constructed according to my said invention. Fig. 2 is a plan view of the same, and Fig. 3 is a sectional view taken in aplane at right angles to Fig. 1.

A is the mash-tub, having the usual config-l uration and of the usual construction, except that in place of the central transverse plank, which ordinarily forms a portion of its bottom, there is substituted a beam, B, of a depth and width suficient to receive the hollow castings 3o hereinafter described. The beam Bis secured in place to form part of the bottom of the nxashtub, as represented in Figs. 1 and 3, and has in its upper side a large cavity, (shown in trans verse section in Fig. 3,) and the longitudinal upper edges of which are rabbet-ed to receive the anges of the castings, as presently herein explained. These castings have substantially the form represented in the transverse sec tional view, Fig. 3and each may be of any 4o desired length, so long as the entire number of castings placed end to end in the cavity formed in the upper part of the beam B extend nearly or quite the length of the said beam within the tub A, as represented in the drawings. These castings are Iive in number namely, a central casting, a, and Others extending outward from said casting, and in dicated by the reference-letters b c. These castings have flanges a', which restin the rabbeted upper edges of the cavity in the beam 5o B, and as represented in Fig. 3. These castings are made hollow by any of the means ordinarily employed in foundries for that purposea.s, forv example, by coring out, so

termed. When placed end to end in the cavity 5 5 v of the beam B, as hereinbefore explained, and represented in Fig. 1, they have no direct communication with each other, but are connected with each other by upright bow-shaped pipes C, the legs f of each of said pipes C being 6o -ing vertical shaft, F, the lower end of which shaft may work in a suitable bearing provided inthe top of the central casting, a.

One end of the series of castings connects with `the steam-inlet pipe H, while the castings at the opposite end of said series are provided with au outlet steam-pipe, I, so that steam, being admitted through the pipe H, passes into and through the nearest casting, thence through the adjacent bowed pipe C to the 8O next casting, and thence alternately through the pipes and' castings, until it finds its exit through the'outlet-pipe I, the steam heating the pipes, and consequently the contents of the mashftub.

The bowed pipes C are arranged at such distance apart as to permit the stirrers D to pass between them while in rotation, so that the contents ot' the mash-tub are stirred, agitated, and, carried around and brought in contact with the pipes, so that a practical uniform and homogeneous heating ot the contents of the mash-tub is secured.

The inlet-pipe H may be connected with two branch pipes, m n, each provided with a suitable cock, so that when desired the steam may be shut oft' and cold water run through the castings and bowed pipes, to rapidly cool the contents of the mash-tub when the exigencies of the business require such to be done.

Itwill be observed that by the use of the beam to forni or constitute part ofthe bottom ofthe mashtnb :L simple and efective means is provided for the firm and secure retention and support of the castings in place, and at the same tilne prevcn ts the infiltration through the joints around the castings of the liquid from the contents ofthe mash-tub.

What I claim as my invention is- 1. The combination of the hollow castings and the upwardly-extending bowed pipes with a mash-tub, the whole conjoined for use and operation substantially as und for the purpose herein set forth. 

